currently, your plugins show randomly products in case of not finding related products. in my shop, this must not happen, so I commented out the part of your code, which does this. would you mind including another option on the settings page, which allows enabling/disabling this? (I think, the default should be 'disabled', as your plugins intends to show 'related products', the relation being tag or category.)
that would be great! If you like, I can also add this to your plugin and send it to you, in case you like the idea while having no time.
cheers, jana :-)
ps: your plugin saved me a lot of time and nerves as I tried to include the same functionality in my theme, without really getting somewhere due to bad api docu... so, thanks A LOT!