Posts aggregator allows you to display links to similar posts, new posts or random posts from multiple blogs. With or without thumbnails at your choice. There's paid and free versions.
Common limitations for both versions:
Currently supported platforms: Blogger;
Aggregator of similar posts is labels (tags) based, so you should have tags set for your posts;
Free version rules and limitations:
First 1000 displays are trial and work just like paid;
After trial max number of blogs that can be aggregated reduces to 2;
After trial max daily number of displays could not exceed 500, after that widget will appear blank;
Sponsored links appearance possible;
Paid version rules and limitations:
Max number of blogs that can be aggregated is 10;
100,000 max daily number of displays, after that widget will display blank;
If your daily number of display or number of aggregated blogs exceeds limitations of paid version please contact [email protected];
You can aggregate from 2 blogs for free, each additional blog costs $1 per blog per month; for example, if you want to aggregate from 4 blogs you'll need to pay $2 a month. Be aware that if you want to install widget on all of your sites you'll have to pay for each separately, so having it on all 4 sites as in example above will cost you $2 * 4 = $8 a month.
Currently supported payment methods: Paypal;
To subscribe to paid version please provide us with:
Amount you'll need to pay monthly: $1.
What can be configured:
What to show: similar posts or random posts;
List of sites to aggregate from;
List of labels for similar posts to search for on those sites;
Max number of links to display on your widget;
Display with or without thumbnails; default thumbnail;