Making your own main page
The search feature is pretty useful to create your own main page, if you're only interested in a particular set of tags.
[research-level] or [mathematical-physics] or [string-theory] -[homework], for example, takes you to this pagethis page, which shows the questions tagged by at least one of those three tags and does not have the homework tag. Using the "active" tab"active" tab on the search page, we get a page which behaves very similar to the main page in that one can see question bumps.
Bookmark the search page link you just created and use it instead of the main page!