1.) Title Attribute Weight
The title attribute really doesn't carry much weight these days. It's been replaced prominently by the "alt" tag on impages and regular H1 headings on the page. A page without them can rank just as well (probably better) then a page with them.
by: Hectic Capiznon Bloggers 2009 tip no.1 for Onpage
2.) Multiple Bookmarks
Multiple bookmarks (from multiple users) on the same post is fine. There is no set number we can give you. The more unique diggs, stumbles, and bookmarks, etc, for each post you can generate, the better chance it will get noticed online.
by: Hectic Capiznon Bloggers 2009 tip no.2 for Offpage
3.) Suffering from Duplicate Contents
Suffering from Duplicate Contents you need to REMOVE ALL DUPLICATE CONTENT, add UNIQUE CONTENT to the site AND then submit a reconsideration request telling "G" to review the site. Also, it may take several months and multiple submitted reconsideration requests for you to solve all the problems.
Posted by: Noah Group