1. "Pligg is Web 2.0 Content Management System (
CMS) unlike any other existing
CMS."
I disagree. A
CMS is what you call Drupal, Typo3 or for that matter, Joomla. Pligg is not a
CMS. The difference is obvious.
2. There's no link to download Pligg on the homepage. Not even a mention that a download link is in the forum.
3. Simplify the homepage. There's no need to have latest forum posts IMO. Here's why:
New users want to look at a) live demo b) screenshots c) (Link to) FAQ & Requirements d) Download link w/ installation instructions.
Returning users would visit the forum straight away to communicate or check the latest posts. They won't look in the homepage for forum happenings.
4. Homepage layout is sensitive. Forum posts seem to push the right bar down the content (currently using IE, didn't chk in other browsers). Screenshot:
5. Hire a graphic designer and give a fresh, simple yet professional look to the homepage. The money for this can possibly be obtained by offering paid installation services.
Not related to homepage:
The documentation wiki is good for improving the existing documentation by devs but not ideal for new comers who would like to install it. May be a packaged html instructions or pdf would do better. Look at how Joomla, WordPress are doing. I can help on this matter.
These might seem like complaints, but am only suggesting. Pligg is a great 'link management/submission' script. Keep up and continue the good work!