First of all I want to say that I acknowledge that Haste may not deserve five stars -- but in any case it neither deserves half of a star like the other reviewer gave it. So, to be clear, my rating is an effort to balance the tremendous injustice done by what clearly seems to be a limitation of the reviewer to correctly use the software. Sorry dude if my comment upsets you, but that's the truth.
*** Now, with the review itself: ***
I pretty much love Haste.
If you haven't tried it yet, Haste is a gateway to quickly use the web search engine of your choice from the comfort of your desktop without having to switch to a web browser, open a new tab and proceed with your query.
The interface is clean and will remain you to Spotlight / Alfred / LaunchBar / Quicksilver, etc. Upon invoking Haste and starting typing your desired search term you will be able to quickly choose what search engine you want to employ by using a clever method that involves typing two or three consecutive letters (of your choice), an alias, that will open a new tab on your default browser and launch the search.
Can Haste be improved? Surely it can, just like almost every other piece of software in existence. Does it deserve five stars right now? Probably not, and I wouldn't rate it this way if the previous rating was a honest rating.
But for sure I could give Haste four well-deserved stars because:
1) The app is quite handy and accomplishes what it promises very well;
2) IMO -- yeah, that's right, FOR ME - it has a better approach to web search than Alfred has: I considered buying Alfred for some time because you know, it could do the web search thing PLUS all the other neat stuff it can do. Well, it turns out that for my workflow I don't need any of the other fancy features it provides and, conversely, to my taste, Haste nails it down how to make web searches from the desktop with Alfred coming far on a second place with its implementation;
3) The developers are great, really: some time ago, a couple of months or so, I emailed them with some questions about the product and some 'suggestions' based on my own workflow (I labeled them 'Wish request' ^_^) and they not only answered quick but with a lot of useful information;
4) Last but not least (should I've put this on top?) the software is light on resources, as all well coded software should be: it won't feast on your system CPU cycles or memory, it will stay out of the way consuming very little energy until you bring it up to the foreground.
So yeah, if the price is fair once it goes on sale I'm considering buying Haste. Bonus point: it will be commercialized through the MAS.