I feel people should be allowed to bump up their threads if certain criteria are met. For example, sometimes we really are stuck, and need help. We have posted a thread, and it has got lost in between other posts. We've googled around, but to no avail. So I think the user should be allowed to bump it up in this case.

Of course this facility should not be abused. It should only be used sparingly. Maybe there should be a button "bump up thread", that can only be used say 1 day after the last post to the thread. Also, everytime someone bumps up their thread, a message is sent to the moderators so that they can check for repeat offenders or abuse of this service. Finally, a bumped up thread should be shown as such, so that people who do not wish to answer to bumped-up threads can ignore them.