I was unable to send trackbacks and pingbacks after I tested with WordPress 1.5.1.2. I found the solution yesterday.
With the rapid proliferation of RSS Feeds and offline aggregators it is presumable that virus writers will try to exploit this avenue to spread the virus. But the question is whether it is feasible?
Most Blog software provides an option to use a sanitized version of the post title as part of permalink url. Thingamablog, a Java based offline blogging software, doesn't do it. So I decided to create one for myself in Java.