Phil Bradley search engine expert put out a list of search engines with special features, which includes AllPlus in two different categories: "Visual results search engine" (for using a cluster graph) and "Blended results" (for clusters, web results, news, images, video).
About AllPlus.com:
The allplus.com beta test demonstration site allows users to query all major Web content sources, including Google, Yahoo and Ask.com Web pages, News, Images, Videos and Blogs. The results are compared and ranked and presented to the user in an intuitive and clearly organized way.
Over 400 people have downloaded the Android version of HealthMash and we are happy to read our customers' feedbacks. Among these messages there were some calling our attention on a bug in the Android application of HealthMash, i.e. one willing to search from the main page with a mistyped query would not meet the "Did you mean?" suggestion, post-search. This bug has been fixed since then and we are glad you helped us making the HealthMash Android app better.
Recently we have updated the HealthMash Explore and Discover database. This update contains more 15 millions changes.
Try out the improve HealthMash on the web or on your iPhone or Android mobile!
We have added Facebook 'Like' feature to HealthMash results. Now you can see what your friends tagged as important, useful or interesting.

New feature is
available on HealthMash. The addition of suggestion enables you to search for different health-related terms more easily. It is initiated by typing at least 3 characters of a term into the query field. The feature offers various search options to chose from by the dynamics of typing. It is most useful when you are not sure about the spelling of the exact term or cannot recall the expression entirely. We hope that such updates contribute to a more easy use of the site.