My Personal Preference Should Be Evident.
But what do you think?
The salient difference here should be between title case and sentence case. The former capitalizes all major words, but not short words like prepositions, the latter only capitalizes the first letter of the first word.
I would prefer title case, however I think we only have a choice between sentence case and capitalizing every word without exception, Which Is Not Good Typography And Looks A Bit Strange On The Page.
In the few cases were something does need a lowercase first letter pedants like you or I can simply ask for a correction to "Spotlight on Moodle" or "Search the Web" etc.