I needed a Mindmap recently that would have hyperlinks to different sites. It also had to be readable and scrollable. Here are my efforts:
Webspiration was a little disappointing as it would not hyperlink when embedded. The links work when you are in Webspiration. For ease of use, look, and ability to be creative I really like Webspiration but it falls down in the embedding. You can collaborate, upload Inspiration, download to Inspiration and you can publish on a webpage and access through a hyperlink, but you can't click on a hyperlink in the embedded document. See example below. All you can do is zoom in and out to view the document.
Result: Overall Features 8/10 Embed in blog/wiki 5/10
Mindmeister came up the best in embedding in a wiki/blog. It looks good, easy to navigate, simple to create map, graphics are limited, not much of a variety as Webspiration, but it did exactly what I wanted and that was to embed a diagram that hyperlinked. You can add notes and attachments and it can be collaborated on. It is also free, but you can upgrade for a price to a more sophisticated product with more features. Hover over the links and you will see thumbnails of the websites.
Result: Overall Features 8/10 Embed in blog/wiki 10/10
Wise Mapping is the third mind map I looked at. It is very similar to Mindmeister in all of the features. There is quite a range of colours, you can add notes and others can collaborate on it as well. There are limited graphics. It embeds easily enough but I didn't choose it as the one to go on my wiki as it is difficult to manipulate and view. Mindmeister was clearer and easier to view.
Result: Overall Features 7/10 Embed in blog/wiki 8/10
So my main choice was Mindmeister, the others had merits but Mindmeister was far ahead as the choice to use an embeddable hyperlinking mindmap.