I have already working on web based feed aggregators; mmofresh.com and releaseplanet.com which are targeted for specific topics. But you can just submit your feeds to general feed aggregators;

Here is a list of top feed aggregators around;

Top RSS Aggregators

http://www.blogdigger.com/add.jsp (PR7)
http://www.blogpulse.com/submit.html (PR7)
http://www.feedage.com (PR6)
http://www.2rss.com (PR6)
http://www.blogstreet.com/bsibin/add.cgi (PR6)
http://publisher.yahoo.com/rss_guide/submit.php (PR6)
http://www.plazoo.com/en/addrss.asp (PR6)
http://www.feedbite.com (PR5)
http://www.rssfeeds.com (PR5)
http://feedraider.com/ (PR5)
http://www.feedsubmitter.com/ (PR5)
http://purerss.com/addfeed.php?catid= (PR5)
http://www.unclefeed.com/rss/addfeed.html (PR4)
http://www.feedsee.com/submit.html (PR4)
http://www.feed24.com/?c=add (PR3)
http://www.feedfury.com/ (PR3)
http://www.goldenfeed.com/AddFeed.aspx (PR3)
http://www.feedooyoo.com/ref.htm (PR3)
http://www.feedest.com/feedAdd.cfm (PR3)
http://www.rssmad.com (PR3)
http://www.feedbase.net/Add.php
http://www.rssmicro.com/?m=fs#theForm
http://www.rssmotron.com/feed_eater.php

Taken from http://www.buzzblogger.com/videos/instant-backlinks/

Tags: aggregator, blog, feed, mmofresh