SMBStats 1.7.0.0 released.
Change log and screenshots in first post.

"Only overwrite if score is better"

Then how did I lost all my times when starting a new game ?

I bet you only lost your global leaderboard time because it is not working same as level leaderboards.

1. Hack savegame.dat
2. Replace time with horribly bad time.
3. Beat level again.
4. ???
5. Profit.

Steamworks api have some parameters to upload score and meat boy using "Only overwrite if score is better" so if you replace time with bad time then it won't overwrite. So only solution is using Steamworks api and uploading your score with "Force overwrite" setting (enum). Also i don't understand why peoples don't checking their times and kill yourself if time is stuck. This happened to me one time in cotton alley and i killed myself to avoid 0.00 time upload. But in forest chapter this won't be possible probably because levels finish very quickly.

Does it use Steam leaderboard ?

It is Steam leaderboards.
Now i'm thinking where to place global leaderboard (not global level filter)
This is current interface:

Characters & Leaderboard support:

It would be nice to see characters that have been unlocked. 

Something like this:

careful!!! 4colormeatboy, 8bitmeatboy and  4bitmeatboy  icons

Zarkith made icons (I mean cropped :P) and he not sent alternative meat boy icons to me.
Probably because sprites file haven't these icons yet because these icons coming with level portal update :)

It would be nice to see characters that have been unlocked. 

Something like this:

Seems like you get meatninja at 99% at least from my and a few other`s experience.

This means you can have missed 4 levels, or 4 bandages. Or any combination of those.

1 level and 3 bandages etc. A bit unsure about glitch worlds, and the exact math behind this.

Look like math is like that:
Golden god = 100% = Round(Progress - Glitches completed)
So if progress after glitch percentage removed (6%) is bigger than 99.5% then it round up to 100% and awarding golden god which is equal to 4 levels or 4 bandages missing :)
Example for me only skyscraper remained it is 3 levels and 2 bandages and after i complete skyscraper with 1 bandage it gave me golden god. (3 levels + 1 bandage)

Greater than 99.5% leaves you with 2 levels or bandages.  I still think if you are going this route, its anything greater than 99%, which equates to 4 values; since the 5th one rounds to exactly 99%

I thought Round(percentage) == 100 is more reasonable and i don't understand why Tommy made it (int)percentage > 99 or like this thing.

Probably not even (int)percentage.  More like

if (progressPercent > 99)
{
//code to give golden god/meat ninja here
}

I'm trying to tell if achievement info is this "100% the game" then you must use 100 in if statement. It not makes sense to use 99 for 100% the game achievement. I tried to find reasonable math which using 100 number in if statement but it look like failed :P

Seems like you get meatninja at 99% at least from my and a few other`s experience.

This means you can have missed 4 levels, or 4 bandages. Or any combination of those.

1 level and 3 bandages etc. A bit unsure about glitch worlds, and the exact math behind this.

Look like math is like that:
Golden god = 100% = Round(Progress - Glitches completed)
So if progress after glitch percentage removed (6%) is bigger than 99.5% then it round up to 100% and awarding golden god which is equal to 4 levels or 4 bandages missing :)
Example for me only skyscraper remained it is 3 levels and 2 bandages and after i complete skyscraper with 1 bandage it gave me golden god. (3 levels + 1 bandage)

Greater than 99.5% leaves you with 2 levels or bandages.  I still think if you are going this route, its anything greater than 99%, which equates to 4 values; since the 5th one rounds to exactly 99%

I thought Round(percentage) == 100 is more reasonable and i don't understand why Tommy made it (int)percentage >= 99 or like this thing.

Seems like you get meatninja at 99% at least from my and a few other`s experience.

This means you can have missed 4 levels, or 4 bandages. Or any combination of those.

1 level and 3 bandages etc. A bit unsure about glitch worlds, and the exact math behind this.

Look like math is like that:
Golden god = 100% = Round(Progress - Glitches completed)
So if progress after glitch percentage removed (6%) is bigger than 99.5% then it round up to 100% and awarding golden god which is equal to 4 levels or 4 bandages missing :)
Example for me only skyscraper remained it is 3 levels and 2 bandages and after i complete skyscraper with 1 bandage it gave me golden god. (3 levels + 1 bandage)

What program used to read or open .dat (savegame)?

Any hex editor?

If you know that WZ has been completed and how many bandages you wear, you can tell which characters have been unlocked.

And the char icons from http://twitpic.com/435bk1 (cut and resize)

I asked meat ninja which require 100% but not unlock exactly in 100% (or 106%)

This project is awesome.

Is there a way to compare times between users already on the web site, or is the function still under development?

Web SMBStats compare example: ww vs zarkith
http://smbstats.muffinz.eu/ww:zarkith

It would be nice to see characters that have been unlocked. 

Something like this:

I prefer to use savegame file for find unlocked chars but it is big bitwise enum and not possible for me to guess chars :( Also how may i know is meat ninja unlocked? Because it not unlock in exactly 100%.
Also where can i find char icons? Probably you found it from here: http://twitpic.com/435bk1 ?

SMBStats 1.6.0.0 released.

http://code.google.com/p/smbstats/downloads/detail?name=SMBStats-1.6.0.0.zip

- Added "Chapter stats" section for show Glitch level status, Boss level status etc.
- Added "All" level type filter
- Added filters to compare mode
- Added warp level names (Thanks Roboticaust for this)
- Compare mode have red to green gradient background colors for difference
- New icons from Zarkith

I liked: 7-20: 4 Letter Word