We have long relied on the Slovak parish records microfilmed by the LDS (Mormons) for our family research. Those records are now rapidly coming online as digitized images. Now the records are being indexed.
It's time to consider paying it forward.
The digitized images of Slovak parish records will not index themselves, and there is a need for people who are familiar with the languages of the records to volunteer; see: http://blog.eogn.com/eastmans_online_genealogy/2012/06/familysearch-has-a-growing-need-for-international-indexers.html
I started indexing for the 1940 census earlier this spring, and this week started indexing Slovak parish records. If you are comfortable reading the Slovak parish records and have some familiarity with Latin, Slovak, or maybe Hungarian, or the Cyrillic alphabet, please consider becoming a volunteer indexer. You decide when and how much you index (I go several days or a few weeks without indexing, sometimes). FamilySearch has a number of tutorials and blogs about indexing to help you get started and get comfortable with the process. I would suggest that you start with something fairly familiar and easy for a little while (such as the 1940 census) just to familiarize yourself with the indexing software and rules, and then try some Slovak records.
I found indexing the Slovak records a little more challenging than researching in them, because the indexing system gives me just one or two pairs of facing pages in a batch; but when researching, I can page forward and back or jump around, comparing handwriting and learning the common family names of the village/town. So, it was a little slower going than I expected, and I left off and came back to my batch a few times before I finished it. (Didn't help that my first batch had poor handwriting.)
for more info.