A very related strategy and something that's only available since the last update is taking advantage of app bundling. Apple basically allows developers to include their apps in up to three bundles of 10 different apps.
There are few potential advantages here. Firstly, bundles are featured in the separate section of the featured apps page, making them much easier to be found. Then there's revenue potential. Bundled apps are often a better value deal which makes them more appealing to at least a certain demographic.
The question here is, if someone downloads your app bundled with nine other apps, how likely are they to actually use it? The way I view it is it may and may not matter. If you can give your app a boost big enough to rank higher, you will reach more users and, as a result, more will adopt.