You can take a look at this WCF & Java Interop tutorial series. The series covers different data types between Java & WCF, WCF ASP.NET...
More external links and more popularity...
Is h1 tag bad?
How to get acquainted with more developers in Google?:D
Exactly. Frequent PR update in toolbar makes people aspire after PR value blindly and ignore the contents of web pages.
Beside that, I think external links and visit quantity are also important.
Separate names with a comma.